Over Drive
I have always wondered if I put an overdrive unit on my RV will do any good. If it gives you a 10% decrease in RMPs does it give you 10% better gas mileage? Or just 2 or 3% better MPGs. Would it be wo...
Forum Discussion
Buster-I have wondered about this also. At 65 mph my Cobra Malibu 37' with a 460 and C6 is turning 3600 RPM. Way to high in my opinion. Furthermore, when I kick it into neutral running 60 mph it will coast forever. it seems as if the motor is working against itself. I've also considered changing the rear axle ratio. I think I read where mine has around a 5.00:1 ratio. As far as "if it would have been better to have an overdrive don't you think the factory would have done it?" yes, the next year the factory put an overdrive behind the 460 as did GM somewhere in that time frame. RPM's went way down and fuel mileage went up.
